DE202015101006U1 - The water treatment unit - Google Patents

Abstract

Water treatment device (1, 1 ') for installation in a horizontal pipe (5) comprising: - a connecting piece (2) with an inlet (3) and a drain (4) for connection to the pipeline, - a volumetric flow meter (10), - a water treatment device (7) with an operating connection (23) directed upwards in operation, and - a closure element (11) for shutting off the water treatment device (7) from the pipeline (5), characterized in that a connecting intermediate piece (6, 6 ') for connecting the water treatment device (7) to the connection piece (2), wherein the connection intermediate piece (6, 6 ') comprises the following elements: - a first connection (21) for connecting the connection intermediate piece (6, 6') to the connection piece ( 2), - a second connection (22) for connecting the water treatment device (7) to the connection intermediate piece (6, 6 '), - an inlet channel (8) for feeding untreated water from the inlet (3) into the W. - a drainage channel (9) for discharging treated water from the water treatment device (7) to the outlet (4), - an electronic control device (12) and a servomotor (26) for closing or opening the closure element, wherein the volumetric flow meter (10) and the closure element (11) are arranged in the inlet channel (8) and / or in the outlet channel (9) of the connecting intermediate piece (6, 6 '), and wherein the connecting piece (2), the connecting intermediate piece (6, 6') ) and the water treatment device (7) in the mounted on the horizontal pipe (5) state are arranged vertically one above the other.

Description

Background of the invention

The invention relates to a water treatment device for installation in a horizontal pipeline comprising a connection piece with an inlet and a drain for connection to the pipeline, a volumetric flow meter, a water treatment device with an upwardly operating in operation connection, and a closure member for shutting off the water treatment device from the pipeline ,

Such a device is marketed, for example, as JUDO HEIFI-REPURE 5000 by Judo Wasseraufbereitung GmbH.

For the pretreatment of water, which is to be filled in a heating circuit, it is known to install fittings in pipelines, which in addition to a shut-off and a water meter also have a connection option for a water treatment device.

Grünbeck Wasseraufbereitung GmbH offers such a fitting under the name GENO-therm ^® . For the installation of the GENO-therm ^® fitting, a length of the fitting corresponding to the length of the pipeline is cut out and the fitting is inserted into the pipeline at this point, so that when installed the various elements (shut-off device, pressure gauge, water meter, conductivity meter, Connection for water treatment device) are arranged in the direction of the pipe one behind the other.

In the case of the filling water desalination unit JUDO HEIFI-REPURE 5000, the section of the pipeline required for installation must also be adapted to the length of the valve.

A disadvantage of the known devices that the space requirements, especially with increasing number of integrated elements in the valve, is relatively high and that retrofitting a high installation cost is required because the cut of the pipe must be adjusted accordingly, so that retrofitting only can be made by qualified personnel.

Object of the invention

The object of the invention is to propose a water treatment device that allows a space-saving and flexible use.

Brief description of the invention

• – einen ersten Anschluss zum Anschließen des Anschlusszwischenstückes an das Anschlussstück,
• – einen zweiten Anschluss zum Anschließen des Wasserbehandlungsgerätes an das Anschlusszwischenstück,
• – einen Zulaufkanal zum Zuführen von unbehandeltem Wasser vom Zulauf in das Wasserbehandlungsgerät,
• – einen Ablaufkanal zum Abführen von behandeltem Wasser aus dem Wasserbehandlungsgerät zum Ablauf,
• – eine elektronische Steuervorrichtung und einen Stellmotor zum Schließen bzw. Öffnen des Verschlussorgans,

wobei das Volumenstrommessgerät und das Verschlussorgan im Zulaufkanal und/oder im Ablaufkanal des Anschlusszwischenstücks angeordnet sind, und wobei das Anschlussstück, das Anschlusszwischenstück und das Wasserbehandlungsgerät im an der waagrechten Rohrleitung montierten Zustand vertikal übereinander angeordnet sind.This object is achieved according to the invention in that a connecting adapter is provided for connecting the water treatment device to the connecting piece, wherein the connecting adapter comprises the following elements:

• A first connection for connecting the connection intermediate piece to the connection piece,
• A second connection for connecting the water treatment device to the connection adapter,
• An inlet channel for feeding untreated water from the inlet into the water treatment device,
• A drainage channel for discharging treated water from the water treatment device to the drain,
• An electronic control device and a servomotor for closing or opening the closure member,

wherein the volumetric flow meter and the closing member are arranged in the inlet channel and / or in the outlet channel of the connecting intermediate piece, and wherein the connecting piece, the connecting intermediate piece and the water treatment device are arranged vertically above one another in the state mounted on the horizontal pipeline.

According to the invention, the water treatment device, the volumetric flow meter and the closure member are arranged perpendicular to the pipeline in series, while the inlet and the outlet run as tubular portions of the fitting along the pipe direction, so that in the assembled state, a vertical arrangement of the connector, the various components (volumetric flow meter, Closing member, electronic control device) of the terminal adapter and the water treatment device is achieved. The water treatment device according to the invention can thus be mounted in a space-saving manner with respect to the pipe direction. The connecting adapter can be designed differently, in particular additional components can be provided. Due to the arrangement according to the invention, it is possible different sized (and accordingly equipped with different numbers or large elements) connecting pieces to connect to the fitting, without having to make changes to the pipeline. In particular, large connection spacers with many components can be used even in tight installation situation.

The fitting and the connecting piece form a water fitting to which various water treatment devices can be connected. The first and second ports of the port interface are oppositely arranged, with the water being introduced and discharged from above into the water treatment device. In order for the water treatment device to be mounted directly on the connection adapter and not to be connected via lines to the connection adapter, the treatment connection of the water treatment device is adapted to the second connection of the connection adapter.

In a preferred embodiment of the invention, the inlet channel and the outlet channel extend transversely, preferably substantially perpendicular, to the inlet and outlet in the connecting adapter. Ie. in the mounted on the horizontal pipe state of the water treatment device run inlet and outlet channel thus at least approximately vertically.

Preferably, the connection interface comprises a blending device for mixing treated and untreated water.

In a further embodiment, the connection piece has at least one venting valve.

In a further development of this embodiment, a vent valve in the region of the treated water and a further vent valve in the region of the untreated water are arranged.

Preferably, the at least one vent valve is designed as a sampling tap for taking water samples.

One after VDI 2035 Recommended treatment for filling water for a heating circuit is desalination. Since the depletion of a desalinization cartridge, the conductivity of the treated water increases, it is particularly advantageous if the terminal adapter has at least one conductivity sensor. With the conductivity sensor so the exhaustion of the desalination cartridge can be detected. The conductivity sensor is therefore preferably arranged in the discharge channel, in which the treated water flows, so that the quality of the water treatment can be detected by the conductivity sensor. Alternatively or additionally, the conductivity sensor can be arranged in the inlet channel, so that the raw water quality can be determined and thus the maximum treatable amount of water can be calculated with known capacity of the connected Wasserbehandiungsgerätes.

The connection intermediate piece preferably has a pressure sensor which is arranged downstream of the closure member in the direction of flow of the water. The pressure sensor can thus be arranged either in the inlet channel between the closure member and the second connection or in the outlet channel between the closure member and the first connection. The closure member can be closed or opened depending on the pressure drop or on the duration of a pressure drop: Upon detection of a permanent high pressure drop (eg due to leakage), the closure member is closed. On the other hand, with a small pressure drop (eg due to low water losses in a heating circuit), water is fed back. The closure member is opened in this case until a predetermined pressure is reached. Thereafter, the closure member is closed again.

For a simple mounting of the water treatment device to the connection adapter, it is advantageous that the second connection of the connection adapter for connecting the water treatment device is designed as a flange with threaded connection. The water treatment device is then preferably designed as a filled with a water treatment agent cartridge with matching mating thread. The cartridge can thus be easily screwed to the connection piece.

Preferably, the water treatment device is a cartridge filled with ion exchange resin. This can be a desalination cartridge with a mixed bed (anion and cation exchanger) or a softening cartridge with a cation exchanger.

It is particularly advantageous if the connecting adapter comprises a sensor for detecting a connected water treatment device, in particular for detecting the type and capacity of the water treatment device. By means of the sensor can be automatically recognized that a water treatment device and preferably also what type and size of water treatment device is connected (for example, a desalination or softening cartridge). The sensor may be, for example, an RFID reader. The water treatment device is then equipped accordingly with an RFID chip.

In a particularly preferred embodiment of the water treatment device according to the invention, the connection intermediate piece comprises a plurality of modules, which are arranged vertically above one another in the state mounted on the horizontal pipeline. For example, a module may include a blending device or a pressure sensor that is installed only when needed. Due to the modular structure, the connection adapter is easily expandable and to the customizable to local requirements. In particular, a later retrofitting is easily and simply possible.

Preferably, the fitting has two union fittings for connecting the inlet and the drain to the pipeline. This allows easy installation, which is particularly advantageous for mobile use of the water treatment device, z. As for water treatments that need to be performed once or only rarely (eg, the filling of a heating system, etc.).

In a preferred embodiment, the inlet channel or the outlet channel is designed as a central channel and the respective other channel as an annular channel surrounding the central channel. The design of the channels as a central channel and ring channel enables a space-saving, narrow design of the connection intermediate piece. Preferably, the central channel is at least approximately rectilinear.

For a mobile use of the water treatment device according to the invention, it is advantageous if a carrying handle is arranged on the connection piece.

The water treatment device according to the invention is preferably installed in a supply line for a water cycle, in particular for the treatment of fill and make-up water in the flow of a heating cycle.

In a method of operating a water treatment device described above, an element of the terminal interface generates electrical measurement signals and transmits them to the electronic control device. The electronic control device transmits in response to the received measurement signals control signals to the servomotor, which cause a closing or opening of the closure member when a stored in the control device exhaustion limit is exceeded or exceeded, reaching the exhaustion limit, the exhaustion of a water treatment unit of the water treatment device or the indicates complete filling of a water cycle. Limit values for various control parameters (eg pressure, water quantity, conductivity) can be used as the exhaustion limit, that is, for example, a pressure, a water quantity or a conductivity limit value. In the case of a water circuit to be filled in addition, the limit of the volume of the water cycle can be used to close the closure member as soon as the water cycle is completely filled.

In one variant, the volumetric flow meter generates electrical measuring signals as a function of the volumetric flow and transmits them to the electronic control device, wherein the electronic control device transmits control signals to the servomotor depending on the received measuring signals, which cause closure of the closing element, if the exhaustion limit value in the control device stored first flow limit is exceeded, with the capacity of the water treatment device is used as the first flow limit. The water flow is thus stopped when the water treatment unit of the water treatment device is exhausted. Preferably, the flow limit value is selected depending on the water quality of the water to be treated or automatically adjusted by the control device.

In another variant, the water treatment device is connected upstream of a water cycle and for filling the water cycle is used as exhaustion limit a second flow limit and for the Nachspeisung of the water cycle as exhaustion limit a third flow limit in the electronic control device, the second flow limit greater is considered the third flow limit. If z. B. a heating circuit completely refilled, so a significant amount of water is needed. The corresponding second flow limit tolerates a larger amount of water that may be treated continuously. On the other hand, if water is added to an already filled heating circuit to compensate for minor water losses, a smaller (third) flow limit will be used for continuous water treatment. In this case, larger quantities would indicate leakage.

In a further variant, the conductivity sensor generates electrical measuring signals as a function of the conductivity of the treated water and transmits them to the electronic control device, wherein the electronic control device transmits control signals in dependence on the received measuring signals to the servomotor, which cause closing of the closing element, if Exhaustion limit a stored in the control device conductivity limit is exceeded. By closing the closure member when the conductivity limit value is exceeded, inadequate treatment of the water due to the exhaustion of the water treatment apparatus can be avoided.

Another variant provides that the pressure sensor electrical measurement signals in response to the pressure in a water treatment device downstream water cycle detected and transmits to the electronic control device electrical measurement signals, and that the electronic control device in response to the received measurement signals control signals to the actuator transmits, causing closure of the closure member when the exhaustion limit exceeded a stored in the control device upper pressure limit is exceeded or Opening the closure member cause when a stored in the control device lower pressure limit value is exceeded. In this way it can be ensured that, in the event of a pressure drop due to low water losses in a circuit, water is fed back until the pressure reaches a setpoint again, while in the case of a leak (repeated pressure drop despite make-up) the closing element is closed.

Preferably, different water treatment devices are assigned different exhaustion limits for different control parameters and stored in the control device, wherein the sensor for detecting a connected water treatment device transmits information regarding the connected water treatment device to the control device, and the exhaustion limits associated with the connected water treatment device for outputting the control signals for closing or opening the closure member are released. The sensor detects the type and size of the water treatment device. If, for example, it is detected that a desalination cartridge is connected to the connection adapter, the conductivity and / or water quantity can serve as control parameters. The conductivity sensor is activated in this case. As soon as a conductivity limit value or water quantity limit value stored in the controller is reached, the water treatment is stopped by closing the closure member. This avoids that insufficiently treated water in the subsequent installation, eg. B. flows into the heating circuit.

In addition, limit values with regard to the maximum current volume flow and the maximum duration of uninterrupted water removal can also be stored in the control device and used to control the closure element.

In a particular variant, the closure member of the water treatment device according to the invention is used as a flow restrictor, d. H. In addition to the complete opening and closing of the closure member, the closure member can also reduce the flow rate only without stopping it completely. For this purpose, the closure member may be formed, for example, as a ball valve. This is particularly advantageous if water treatment cartridges of different size or with different water treatment processes and a different kinetics associated with the water treatment device according to the invention should be used, since depending on the cartridge size of a descaling or desalination cartridge different max. Flow rates are allowed (the smaller the water treatment device the smaller the maximum flow allowed). In this way it can be avoided that a water treatment device is "run over".

It is particularly advantageous if the flow through the closure element is reduced as soon as a first restriction limit value is reached, in particular reaching the first restriction limit value falls below the residual capacity of the water treatment unit of preferably 10% -30% of the total capacity of the water treatment unit, in particular 20%. the total capacity of the water treatment unit indicates. This allows a better utilization of the capacity of the water treatment device. Preferably, the flow is reduced by 50% -70% from the flow in normal operation.

In addition, it can also be advantageous for the closure member to be closed for a short time as soon as a second restriction limit value is reached, wherein, in particular, reaching the second restriction threshold value falls below the residual capacity of the water treatment unit of preferably 10% -30% of the total capacity of the water treatment unit, in particular 20 % of the total capacity of the water treatment unit. The brief closure of the closure member causes a longer contact time of the water to be treated with the water treatment unit, resulting in the release of residual capacity. Preferably, the closure member is closed for 1 minute to several minutes.

Further advantages of the invention will become apparent from the description and the drawings. Likewise, according to the invention, the above-mentioned features and those which are further developed can each be used individually for themselves or for a plurality of combinations of any kind. The embodiments shown and described are not to be understood as exhaustive enumeration, but rather have exemplary character for the description of the invention.

Detailed description of the invention and drawing

1 shows a water treatment device according to the invention with pressure and conductivity sensor and opened Verschneidevorrichtung.

2 shows a water treatment device according to the invention with pressure and conductivity sensor and closed Verschneidevorrichtung.

3 shows a rotated by 90 ° view of the water treatment device according to the invention 1 and 2 ,

4 shows a water treatment device with handle according to the invention.

1 - 4 show a water treatment device according to the invention 1 with a connector 2 which has an inlet 3 and a process 4 on a horizontal pipeline 5 connected. The connection of the connection piece 2 to the pipeline 5 is in the present example by means of union fittings 18a . 18b realized. The connection adapter 6 is via a first connection 21 with the connector 2 and a second connection 22 with a water treatment device 7 with a water treatment unit 20 connected. As a water treatment device 7 in particular cartridges come with ion exchange resin as a water treatment unit 20 (eg softener cartridges or desalination cartridges). For bleeding and for taking water samples are on the connector 2 vent valves 19a . 19b arranged in the form of sample taps.

An annular channel 8th and a central channel 9 go through the connection interface 6 , wherein the annular channel 8th the central channel 9 (concentric here) surrounds. In the present case, the annular channel is used 8th as inlet channel, over the untreated water from the inlet 3 to the water treatment device 7 and the central channel 9 serves as a drainage channel, over the treated water from the water treatment device 7 the end 4 is directed.

The connection adapter 6 has a closure member 11 with a servomotor 26 on, with which the central channel 9 and thus the inflow from the pipeline 5 can be shut off. In addition, in the connection adapter 6 various measuring and control devices arranged, which serve to monitor and control the water treatment. In the in 1 - 3 the embodiment shown comprises the connection piece 6 for example, a volumetric flow meter 10 , with which the current volume flow as well as within a given period by the volume flow meter 10 Flowed amount of water can be determined, an electronic control device 12 (S. 3 ) for opening and closing the closure member 11 , a blending device 13 for blending treated with untreated water, a conductivity sensor 14 and a pressure sensor 15 ,

In the electronic control device 12 limit values are stored for various control parameters (pressure, conductivity, amount of water, current flow), the exceeding or falling below of which cause closing or opening of the closure member. According to the invention, these limit values are exhaustion limit values. Exhaustion limit values in the sense of this invention are limit values of control parameters that cause exhaustion of the water treatment device 7 or the water treatment unit 20 of the water treatment device 7 or show a complete fill of a water cycle. For different water treatment units 20 may have different fatigue limits for controlling the occlusive device 11 can be used, wherein the exhaustion limit values can differ both with respect to the control parameter and with respect to the height of the limit value. By means of a sensor 25 (here: at the connection interface 6 ), type and size of the terminal adapter 6 mounted water treatment device 7 be recognized. The sensor 25 transmits this information to the control device 12 which then the previously for the appropriate water treatment device 7 stored control parameters and exhaustion limits for the following control selects and, where appropriate, the required to determine the appropriate control parameters measuring devices activated. If the values of the selected control parameters (pressure, actual volume flow, quantity of water, conductivity) are below the selected exhaustion limit values, the closure element is opened or kept open, while if one of the exhaustion limit values is exceeded, the closure element is closed or kept closed.

According to the invention, all are for controlling the closure member 11 necessary measuring units perpendicular to the direction of the pipe (ie vertically) within the connecting interface 6 arranged, wherein the connecting piece 6 modular in the present case. A first module 6a includes the blending device 13 with a bypass 16 and a threaded connection 17 for connecting the water treatment device 7 , which has a corresponding upward treatment port 23 having. A second module 6b includes the volumetric flow meter 10 , the closing organ 11 as well as the electronic control device 12 , A third module 6c includes the conductivity sensor 14 as well as the pressure sensor 15 , The modules 6a -C are connected together so that the annular channel 8th and the central channel 9 through all modules 6a -C through perpendicular to the pipeline 5 run. Depending on the application, different modules can be added or omitted. In 4 is, for example, an embodiment of the water treatment device according to the invention 1' shown at the connecting adapter 6 ' only two modules 6a . 6b includes. For easy handling is in the in 4 shown embodiment, a carrying handle 24 at the connection piece 2 attached, with which the water treatment device according to the invention 1' can be transported comfortably.

The inventive vertical arrangement of the necessary for the monitoring of the water treatment and control of the closure member elements within the connecting interface 6 regardless of the type and number of built-in elements the same connector 2 for connection to the pipeline 5 be used. This is especially true when comparing the two in 1 and 4 shown embodiments of the water treatment device according to the invention 1 . 1' clear. In particular, the length of the fitting 2 (In the pipe direction) are kept small, so that in the pipeline direction space-saving installation is guaranteed. Retrofitting or replacing individual modules 6a . 6b . 6c or even the entire connection interface 6 Can be done without dismantling the fitting 2 from the pipeline 5 respectively.

LIST OF REFERENCE NUMBERS

1, 1 '

The water treatment unit

2

connector

3

Intake

4

procedure

5

pipeline

6, 6 '

Terminal adapter

6a-c

Modules of connection interface

7

Water Treatment Device

8th

Ring channel (here: inflow channel for untreated water)

9

central channel (here: drainage channel for treated water)

10

Flow Meter

11

closure member

12

electronic control device

13

blending device

14

conductivity sensor

15

pressure sensor

16

Bypass of the blender

17

Threaded connection for water treatment device

18a, b

union nut

19a, b

Bleed valves, Probehähne

20

Water treatment unit of the water treatment device

21

first connection of the connection adapter

22

second connection of the connection adapter

23

Treatment connection of the water treatment device

24

handle

25

Sensor for detecting the water treatment device

26

servomotor

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited non-patent literature

• VDI 2035 [0016]

Claims (16)

Water treatment device ( 1 . 1' ) for installation in a horizontal pipeline ( 5 ) comprising: - a connector ( 2 ) with a feed ( 3 ) and a procedure ( 4 ) for connection to the pipeline, - a volumetric flow meter ( 10 ), - a water treatment device ( 7 ) with an operating connection directed upwards ( 23 ), and - a closure member ( 11 ) for shutting off the water treatment device ( 7 ) from the pipeline ( 5 ), characterized in that a connection intermediate piece ( 6 . 6 ' ) for connecting the water treatment device ( 7 ) with the connector ( 2 ) is provided, wherein the connecting piece ( 6 . 6 ' ) comprises the following elements: a first connection ( 21 ) for connecting the connection intermediate piece ( 6 . 6 ' ) to the connector ( 2 ), - a second connection ( 22 ) for connecting the water treatment device ( 7 ) to the connection adapter ( 6 . 6 ' ), - an inlet channel ( 8th ) for feeding untreated water from the inlet ( 3 ) into the water treatment device ( 7 ), - a drainage channel ( 9 ) for discharging treated water from the water treatment device ( 7 ) the end ( 4 ), - an electronic control device ( 12 ) and a servomotor ( 26 ) for closing or opening the closure member, wherein the volumetric flow meter ( 10 ) and the closure member ( 11 ) in the inlet channel ( 8th ) and / or in the drainage channel ( 9 ) of the connection intermediate piece ( 6 . 6 ' ) are arranged, and wherein the connecting piece ( 2 ), the connection adapter ( 6 . 6 ' ) and the water treatment device ( 7 ) in the horizontal pipeline ( 5 ) mounted state are arranged vertically one above the other. Water treatment device ( 1 . 1' ) according to claim 1, characterized in that the inlet channel ( 8th ) and the drainage channel ( 9 ) in the connecting intermediate piece ( 6 . 6 ' ) transversely, preferably substantially perpendicular, to the inlet ( 3 ) and expiration ( 4 ). Water treatment device ( 1 . 1' ) according to one of the preceding claims, characterized in that the connecting intermediate piece ( 6 . 6 ' ) a blending device ( 13 ) for mixing treated and untreated water. Water treatment device ( 1 . 1' ) according to one of the preceding claims, characterized in that the connecting piece ( 2 ) at least one venting valve ( 19a . 19b ) having. Water treatment device ( 1 . 1' ) according to claim 4, characterized in that eleven vent valve ( 19b ) in the area of the treated water and another vent valve ( 19a ) is arranged in the region of the untreated water. Water treatment device ( 1 . 1' ) according to claim 4 or 5, characterized in that the at least one venting valve ( 19a . 19b ) is designed as a sampling tap for taking water samples. Water treatment device ( 1 ) according to one of the preceding claims, characterized in that the connecting intermediate piece ( 6 ) at least one conductivity sensor ( 14 ) having. Water treatment device ( 1 ) according to one of the preceding claims, characterized in that the connecting intermediate piece ( 6 ) a pressure sensor ( 15 ), which in the flow direction of the water behind the closure member ( 11 ) is arranged. Water treatment device ( 1 . 1' ) according to one of the preceding claims, characterized in that the second connection ( 22 ) of the connection intermediate piece ( 6 . 6 ' ) for connecting the water treatment device ( 7 ) as a flange with threaded connection ( 17 ) is trained. Water treatment device ( 1 . 1' ) according to one of the preceding claims, characterized in that the water treatment device ( 7 ) is a cartridge filled with ion exchange resin. Water treatment device ( 1 . 1' ) according to one of the preceding claims, characterized in that the connecting intermediate piece ( 6 . 6 ' ) a sensor ( 25 ) for detecting a connected water treatment device, in particular for detecting the type and capacity of the water treatment device ( 7 ). Water treatment device ( 1 . 1' ) according to one of the preceding claims, characterized in that the connecting intermediate piece ( 6 . 6 ' ) several modules ( 6a . 6b . 6c ) located in the horizontal pipeline ( 5 ) mounted state are arranged vertically one above the other. Water treatment device ( 1 . 1' ) according to one of the preceding claims, characterized in that the connecting piece ( 2 ) two union fittings ( 18a . 18b ) for connecting the inlet ( 3 ) and the process ( 4 ) with the pipeline ( 5 ) having. Water treatment device ( 1 . 1' ) according to one of the preceding claims, characterized in that the inlet channel ( 8th ) or the drainage channel ( 9 ) is formed as a central channel and the respective other channel as an annular channel surrounding the central channel. Water treatment device ( 1' ) according to one of the preceding claims, characterized in that on the connecting piece ( 2 ) a carrying handle ( 24 ) is arranged. Water treatment device ( 1 . 1' ) according to one of the preceding claims, characterized in that it is installed in a feed line for a water cycle.

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